Puzzler and Robin in “Unfinished Business”

There's something in the wind, Caped Crusaders.

Robin

Holy Graf Zeppelin, an aerial balloon.

And here's another little surprise for you. You see this altimeter? When you reach 20,000 feet, an automatic mechanism will release the basket from the balloon, and you both will reaffirm Newton's law of universal gravitation - back down 20,000 feet!

Robin

I'll bet even Shakespeare didn't have words for such villainy!

Glider, Blimpy.